300B
| Maximum Plate Voltage | 550 V |
| Maximum Plate Current | 120 mA |
| Plate Dissipation | 50 Watts |
| Va | 450 V |
| Ia | 100 mA |
| Vg | -90 V |
| Transconductance | 6.2 mA/V |
| Amplification Factor | 3.9 |
| Filament Voltage | 5 V (DC/AC) |
| Filament Current | 1.2 A |
| Maximum Plate Voltage | 550 V |
| Maximum Plate Current | 120 mA |
| Plate Dissipation | 50 Watts |
| Va | 450 V |
| Ia | 100 mA |
| Vg | -90 V |
| Transconductance | 6.2 mA/V |
| Amplification Factor | 3.9 |
| Filament Voltage | 5 V (DC/AC) |
| Filament Current | 1.2 A |
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